CVE-2026-91852

mediumpriority · track · 0EPSS 0.008 · 56 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.79% (56th) EPSS

CVSS 6.1 · medium

Is it mine?

5 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-28

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Users are recommended to upgrade to version 2.4.12, which fixes the issue.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondaryexploitability 2.8 · impact 2.7

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US

affected products (5)

Products and version ranges known to be affected.

Apache Sling Security Bundle <1.3.12all versionscert_bundDE
Apache Sling XSS <2.4.12all versionscert_bundDE
Apache Sling≤ Security Bundle <1.3.12cert_bundDE
Apache Sling≤ XSS <2.4.12cert_bundDE
apache sling xss protection api< 2.4.12nvdUScpe:2.3:a:apache:sling_xss_protection_api:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3526Apache Sling: Mehrere SchwachstellenDeutsch2026-09-22csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apache Sling ausnutzen, um einen Denial of Service Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen und um Sicherheitsvorkehrungen zu umgehen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-09-23modified 2026-09-30

references (3) nvd

External citations — patches, advisories, analysis.

http://www.openwall.com/lists/oss-security/2026/09/23/12Mailing ListThird Party Advisory
https://lists.apache.org/thread/nd0ncdk5qb9gqvn0s10rmhnbk887k1qoMailing ListVendor Advisory
https://sling.apache.org/news.htmlProduct

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan